The hold-down pressure at the point of minimum slope of graphs of the polynomials fitted to the systolic and diastolic versus hold-down pressure values provides an indication of the correct hold-down pressure.

An inert gas is injected into the condenser if a pressure in the control area is less than a holding pressure, the holding pressure being equal to or greater than the predefined pressure.

In a discharge line (6) branching out from the high-pressure area (2, 4) is arranged a pressure-keeping value (7) the keeping pressure of which is tuned with the opening pressure of the injector nozzle (5).

The hydraulic pressure is maintained at a hold pressure in the hydraulic control system by the auxiliary hydraulic pressurization system.

An electric die cast machine achieving high injection speed and high boost pressure.

Injection pressure, injection time and pressure maintaining time affect the orientation of molecules.

Injection pressure, injection time and holding time will affect the orientation of the molecule.

According to the invention, said counter-pressure is applied by means of a high-pressure pump which may be connected directly to the annular chamber of the casting cylinder by means of a counter-pressure valve.

On the one hand, a holding pressure which secures the adapter (6) to the sleeve (3) is produced via a holding-pressure line (8).

The maximum support pressure exerted by the support layer (26) on the inner tube (22) is between 10-4 MPa and 10-1 MPa.

Using high injection pressure (1500-1800 bars) and holding pressure (about 80% of injection pressure).

Higher injection pressure (1500-1800bar) and packing pressure (about 80% of injection pressure) were used.

Furthermore, the modulator pressure (Pmod) is supplied to the C1 switching valve (80) as a holding pressure when there is a supply abnormality in the C1 solenoid pressure (Pslc1).

An alternative method determines the correct hold-down pressure directly from the pulse-amplitude polynomial coefficients.

After a certain time and pressure (also known as holding pressure) and cooling, the product can be solidified and formed.